We may have found other answers which could help you.
Click here for Boiler Turbo MaxVaillant vcw gb242 eh central heating problem?
vaillant ecoTEC plus boiler fault code - how to fix?
Vaillant condensing boiler ecoTEC plus?
Hot water comes and goes!?
how to fix water pressure its down at bottom of grey part?
Vaillant F22 fault?